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arXiv 0903.4694physics.soc-phcond-mat.dis-nn
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Schelling分离模型的Phase diagram

Phase diagram of a Schelling segregation model

Laetitia Gauvin, Jean Vannimenus, Jean-Pierre Nadal

摘要:

在谢林隔离模型的一个变体中,集体行为的特征是借用了统计物理学的方法,而这些方法的相关性并不明显。定义了基于簇几何形状的隔离措施,并引入了几个类似于用于描述平衡时的物理晶格模型的量。这种物理方法允许定量区分几个政权,并表征它们之间的过渡,导致建立相图。有些转变引起了经验上的突然种族更替。我们还与物理学中的“自旋-1”模型建立了联系。我们的方法提供了通用的工具来分析其他社会经济系统的动态。

英文摘要:

The collective behavior in a variant of Schelling's segregation model is characterized with methods borrowed from statistical physics, in a context where their relevance was not conspicuous. A measure of segregation based on cluster geometry is defined and several quantities analogous to those used to describe physical lattice models at equilibrium are introduced. This physical approach allows to distinguish quantitatively several regimes and to characterize the transitions between them, leading to the building of a phase diagram. Some of the transitions evoke empirical sudden ethnic turnovers. We also establish links with 'spin-1' models in physics. Our approach provides generic tools to analyze the dynamics of other socio-economic systems.

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